JPH0394314A - Production of grip - Google Patents

Abstract

PURPOSE:To improve the efficiency of production by previously sewing a grip skin member having a prescribed shape like a bag or cylinder. CONSTITUTION:The grip skin member 34 having the prescribed shape like a bag or cylinder is previously sewn. The member 34 is arranged along the inwall of a grip mold 40 and a previously molded hard cylinder 36 is arranged along the center part of the mold 40. Resin or rubber softer than the cylinder 36 is injected into the mold 40 to mold a grip core member 32 between the member 34 and the cylinder 36 unitedly with these members 34, 36. Since the manual sewing process of the member 34 is not required, grips of high quality can be highly efficiently produced even by an inexpert worker.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for manufacturing a grip such as a parking brake operating lever for a vehicle or a shift lever for shifting gears.

[Prior Art] FIG. 3 is an explanatory perspective view showing an example of a grip portion of a conventional parking brake operating lever, and FIG. 4 is an explanatory cross-sectional view taken along the line IV-IV in FIG. 3. .

In the example shown in the figure, the grip portion 20 is manufactured through the following steps.

(A) First, a thick cylindrical resin grip core member 22 is press-fitted and fixed onto the outer periphery of the gripping tube 12 formed by curling the tip end of the lever body 10 into a cylindrical shape.

(b) Next! , wrapping a leather or cloth-like grip skin member 24 around the grip core member 22, and fixing the inner surface thereof to the outer peripheral surface of the grip core member 22 with an adhesive;
Furthermore, both end side edges of the grip skin member 24 are sewn by hand. In addition, the tip of the grip skin member 24 (
The head) edge 24a is folded along the grip core member 22 and the inner wall of the hollow part of the gripping tube 12, and the cylindrical cap member 26 is further fitted inside of it, and the tip edge 24a of the grip skin member 24 is folded. securely fixed.

Such a grip skin member 24 is provided for the purpose of improving the tactile sensation of gripping the grip portion 20, unifying the design of the grip portion 20 with the seat, etc., and further enhancing the luxurious feel of the vehicle interior. It is.

[Problems to be Solved by the Invention] In the grip having such a configuration, the grip skin member 24 needs to be sewn by hand, which makes the sewing work complicated and takes a lot of time, resulting in poor work efficiency. It's just that productivity is low <, I1! There are many problems in mass production, such as the manufacturing process requiring skill.

Furthermore, as shown in FIG. 3, there are many uneven seams in the sewn portion a of the grip skin member 24, and when the parking brake is operated, the uneven portion of the fingers or palm that grips the grip portion 20 may hit the driver. It has the problem of causing discomfort and pain.

The present invention solves the above-mentioned problems, and its purpose is to develop a grip that has high production efficiency and that allows even non-skilled workers to manufacture high-quality grips with an excellent feel of operation with high productivity. The purpose is to provide a manufacturing method.

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention provides a method for manufacturing a grip comprising a grip core member made of resin or rubber, covered with a leather or cloth-like Grisop skin member. The method is characterized by including the following steps (a) to (c).

(a) A grip skin member having a predetermined bag-like or cylindrical shape is sewn in advance.

(b) Next, the grip skin member is placed along the inner wall of the grip mold, and the previously molded hard cylinder is placed along the center of the grip mold.

(c) A resin or rubber softer than the cylindrical body is injected into the grip mold, and a grip core member is integrally molded between the grip skin member and the cylindrical body.

[Function] According to the manufacturing method having the above configuration, the grip skin member can be sewn mechanically using a sewing machine or the like in advance.
Work efficiency can be greatly improved compared to traditional hand sewing. Moreover, the grip skin member and the grip core member can be integrally formed by simply inserting the wrapped grip skin member inside the grip mold. As a result, production efficiency can be dramatically improved.

In addition, these sewing and molding processes do not require special skill unlike the conventional grip skin member wrapping and bonding process and sewing process, so even non-skilled workers can easily manufacture the grip. In this respect as well, productivity can be improved.

Furthermore, as mentioned above, the grip core member and the grip skin member can be integrally formed by insert molding, so the tension of the grip skin member is uniform and there are no irregularities in the seams. It has an excellent tactile feel when gripped, and it also gives a visually smart feeling.

Furthermore, in the present invention, since the molded grip part has a cylindrical body with high hardness in the center, it is possible to ensure sufficient strength and rigidity of the grip part. Press-fitting operations can be performed efficiently and reliably. In addition, since the strength and rigidity of the grip part can be ensured by the cylindrical body, the grip core member can be made of a material with appropriate flexibility, so that the grip part has an excellent texture when gripped. can be taken as a thing.

[Example] Next, a preferred example of the present invention will be described in detail with reference to the drawings.

FIG. 1 is an explanatory sectional view showing a molding process when the present invention is applied to a grip of a parking brake operating lever.

The grip molding die 40 shown in the figure includes divided molds 42a and 42b that define the outer shape of the grip portion 30, and the divided molds 42a and 42b.
a. It consists of a hot runner mold 44 for injecting molten resin into the inside of the mold 42b.

The split molds 42a and 42b are configured so that they can be moved vertically in FIG. 1 by driving means (not shown).

The hot runner mold 44 is configured to be movable in the horizontal direction in FIG. 1 by a drive means (not shown), and is arranged so as to close the open ends of the split molds 42a and 42b during molding. And this hot runner type 44
, a resin supply path 44a for supplying molten resin into the divided molds 42a and 42b. 44b is formed, and a recess 44c for fixedly supporting a support member 46 for supporting a cylindrical body 36, which will be described later, is further formed at the end thereof.

Next, the grip part 30 is molded using the grip mold 40.
The process of molding will be explained in detail.

(a) First, the cylindrical grip skin member 34 is sewn in advance using a sewing machine or the like. The grip skin member 34 is made of a leather material such as natural leather, artificial leather, or synthetic leather, or a cloth-like material.

(b) Next, this grip skin member 34 is placed at a predetermined position within the grip oval mold 40 with its seam allowance inside.

That is, first, the hot runner mold 44 is retracted, and the cylindrical body 36 is fitted into the support member 46 that is supported and fixed to the hot runner mold 44. This cylinder 36 is
In order to ensure sufficient mechanical strength and rigidity of the grip portion 30, the grip portion 30 is made of a cylindrical body made of resin or metal that is harder than the resin that makes up the grip core member 32. Further, the distal end portion 36a of the cylindrical body 36 is formed with a slightly enlarged diameter, and has a stepped shape. Then, the tip end 34a of the grip skin member 34 is attached to the tip end 36a of the cylinder body 36.
The grip skin member 34 is folded back along the inner wall thereof, and a cap member 38 is further fitted inside the folded portion to fix the tip portion 34a of the grip skin member 34.

The cap member 38 has a cylindrical overall shape, and its tip side is formed into a flange shape along the outer surface of the grip skin member 34.

Next, the hot runner mold 44 is moved to the left in FIG.
The movement is stopped when it comes into contact with the bottoms of 2a and 42b.

In this state, the cylinder 36 is inserted along the center of the split molds 42a, 42b while being supported by the support member 46. Further, the grip skin member 34 is arranged along the inner wall of the split molds 42a and 42b,
Further, the tip portion 34a of the grip skin member 34 is connected to the cylindrical body 36.
The proximal end 3 of the grip skin member 34 is sandwiched between the distal end 36a of the grip skin member 34 and the cap member 38, and is securely fixed.
4b is supported by split molds 42a, 42b and a photo runner mold 44.

In this embodiment, the tip end 34a of the grip skin member 34 is fixed by being supported by the cylinder 36 and the cap member 38, but the method of fixing the tip end 34a is not limited to this, for example, by adhesion. or other fixing means may be used.

(c) Next, the resin supply path 44a of the hot runner mold 44
Molten resin is injected between the grip skin member 34 and the cylindrical body 36 in the split molds 42a and 42b via the mold 44b, and the grip core member 32 is shaped. Note that the type of resin constituting the grip core member 32 is not particularly limited;
In order to improve the tactile sensation when gripping the grip portion 30, it is preferable to have appropriate elasticity, and any type of resin, foamable or non-foamable, can be used. Then, the pressure at the time of resin injection is set depending on the type of resin used and the time of day.

(d) When the shape of the grip core member 32 is completed, the split molds 42a and 42b are separated, the hot runner mold 44 is retracted, and the molded grip portion 30 is separated from the support member 46, so that the center A cylindrical grip part 30 having a hollow part for rod insertion is formed along the axis. Note that the base end portion 34b of the grip skin member 34 is
If necessary, it is fixed to the grip core member 32 using adhesive, heat welding, or the like.

Next, the operation of this embodiment will be explained.

According to the manufacturing method having the above configuration, the grip skin member 3
4 can be sewn mechanically using a sewing machine or the like, so work efficiency can be greatly improved compared to conventional hand sewing.

Moreover, the grip skin member 34 is shaped like a grip type 40.
By simply inserting it inside the split molds 42a and 42b that make up the grip skin member 34 and the grip core member 3,
2 can be integrally formed, and the complicated step of wrapping and adhering the grip skin member 34 becomes unnecessary, so that production efficiency can be dramatically improved in this respect as well.

Furthermore, unlike the conventional process of wrapping and adhering the grip skin member and sewing process, no skill is required, and even an unskilled person can easily manufacture the grip.

Furthermore, since the grip core member 32 and the grip skin member 34 can be integrally formed by insert molding, the tension of the grip skin member 34 is uniform and there are no irregularities in the seams, as shown in FIG. As a result, the grip portion 30 provides an excellent tactile feel when gripped, and also provides a visually refreshing and smart feeling.

In addition, the cylindrical body 36 can be integrally provided inside the grip core member 32 by insert molding, and this cylindrical body 36 can ensure sufficient mechanical strength and rigidity of the grip part 30. , lever body 10
It is possible to perform the press-fitting operation reliably, and it is also possible to increase the sense of stability when operating the lever.

Although one embodiment of the present invention has been described above, the present invention is not limited thereto, and various modifications can be made within the scope of the gist of the invention.

For example, in the above embodiment, the present invention. Although a case has been described in which the invention is applied to a grip of a parking brake operating lever, the present invention is not limited to this, and can also be applied to a grip of a gear shift lever, etc.

Further, the material constituting the grip core member 32 is not limited to resin, and rubber or the like may also be used.

Furthermore, the structure of the mold for forming the grip part 30 can take various forms depending on the structure of the grip part 30.

[Effects of the Invention] According to the present invention, there is no need for a manual sewing process of the grip skin member, and even an unskilled person can manufacture a high-quality grip with an excellent feel of operation with high production efficiency. Thus, it is possible to provide a grip manufacturing method that can significantly improve productivity and reduce costs.

[Brief explanation of drawings]

FIG. 1 is an explanatory cross-sectional view showing a preferred embodiment of the present invention, FIG. 2 is an explanatory perspective view showing a state in which a grip obtained by the present invention is attached to a lever body, and FIG. FIG. 4 is an explanatory perspective view showing an example of a conventional operating lever, and FIG. 4 is an explanatory cross-sectional view taken along the line IV-IV in FIG. 3. 3 0...Grip portion, 32...Grip core member, 34...Grip skin member, 36...Cylinder body, 40...Grip mold, 42a, 42b-divided mold, 44...・Hot runner type.

Claims (1)

[Claims] (1) In a method for manufacturing a grip comprising a grip core member made of resin or rubber and covered with a leather or cloth-like grip skin member, the following steps (a) to
A method for manufacturing a grip, comprising (c). (a) A grip skin member having a predetermined bag-like or cylindrical shape is sewn in advance. (b) Next, the grip skin member is placed along the inner wall of the grip mold, and the previously molded hard cylinder is placed along the center of the grip mold. (c) A resin or rubber softer than the cylindrical body is injected into the grip mold, and a grip core member is integrally molded between the grip skin member and the cylindrical body.